I was just going to say, I've always had a good experience with Boa systems on snowboarding boots, even though people claim they break regularly. Surprised they didn't get adopted by the sneaker industry. I'm guessing it's either too expensive, or too bulky for them, until now at least.

Edit: Actually, turns out they have been already used in sports shoes, go figure! The aesthetics don't quite seem exquisite, but the functionality seems to be all there.